The Slack Mafia
12 people came through Slack and went on to found or lead other companies.
Stewart ButterfieldCo-founder & CEOFounded FlickrGary VaynerchukInvestorFounded Empathywines +4Shervin PishevarInvestorFounded Freetelly +1Elaine ZelbyEnterprise Product Marketing LeadFounded TofuMeena HarrisSenior Policy ManagerFounded PhenomenalLeigh HoneywellSenior Staff Security EngineerFounded Tall PoppyRani MavramData Intelligence Project LeadFounded CompleteBrad BrennerBusiness Strategy Consultant | Berkeley Business SocietyFounded Joon HealthLuke IgelSoftware Engineering InternFounded Kino AIEdith CooperIndependent Board DirectorFounded MedleyShub ViragiSenior Product ManagerFounded ParabolicBrendan MooreConsultant, Business AnalyticsFounded Tribe Capital
Frequently asked questions
- What is the Slack mafia?
- The Slack mafia is the network of 12 people who came through Slack and went on to found or lead other companies, including Flickr, Empathywines, Freetelly, Tofu, Phenomenal.
- Who is in the Slack mafia?
- Notable members include Stewart Butterfield (Flickr), Gary Vaynerchuk (Empathywines), Shervin Pishevar (Freetelly), Elaine Zelby (Tofu), Meena Harris (Phenomenal), Leigh Honeywell (Tall Poppy), Rani Mavram (Complete), Brad Brenner (Joon Health), among 12 tracked members.
- What companies did Slack alumni found?
- Companies founded by Slack alumni include Flickr, Empathywines, Freetelly, Tofu, Phenomenal, Tall Poppy, Complete, Joon Health, Kino AI, Medley.











